/Engine/Plugins/MeshPainting/Source/MeshPaintingToolset/Public/MeshPaintHelpers.h
void FillSkeletalMeshVertexColors ( [USkeletalMeshComponent](API\Runtime\Engine\Components\USkeletalMeshComponent) * MeshComponent, int32 LODIndex, const [FColor](API\Runtime\Core\Math\FColor) FillColor, const [FColor](API\Runtime\Core\Math\FColor) MaskColor )